Airship propeller



June-Z1, 1932. G. J. PARK AIRSHIP PBOPELLER Filed May 15, 1930 INVENTOR (55m: d. PARK BY I Flag

ATTORN EY UNITED STATES GENE J. PARK, OF NEW YORK, N. Y.

AIRSHIP PROPELLER Application filed May 15, 1930. Serial No. 452,618.

This invention relates to air-ship propelshaft 14 in a circular motion transverse to lers and particularly to propellers having a the axis of the said main shaft. The bevel compound form of motion in which the blades pinions, being in mesh with the annular gear, rotate n the shaft to which they are atare caused to revolve and this imparts a rotached while the said shaft swings transtating motion to the blades 21. Thus, the 5:) versely on the drive shaft of the ship, the blades while being swung in a circle about the object being a combined stabilizing and promain shaft axis, are also rotated at right pelling force. angles thereto by the said level pinions. This Further objects are, to provide simple and compounds the propelling and stabilizing eiiicient means to produce the above described forces and greatly improves the efficiency of effect, and a form of mechanism which may the ship. be easily and economically constructed. In Figure 4; a rotating blade element 24 is For a full understanding and comprehenmounted in conjunction with a fixed blade elesion of the invention, reference will be had ment 25. The effect being that the conven- 15 to the following specification and claim and tional form of propulsion is, in part retained,

to the accompanying drawing, in which: but is augmented by the action of the rotat- Fig. 1 shows a front view of the propeller able element 2%. blades with the operating mechanism mount- While the device is shown and described in ed on an engine of conventional design. its preferred form it is susceptible to other 2 Fig. 2 is a fragmentary enlargement of the modifications thereof and is therefore not main elements shown in Figure 1. limited narrowly to the exact details as illus- Fig. 3 is a vertical section through the trated, but is claimed broadly within the mechanism with the propeller shaft in upspirit and scope of the appended claim. right position. Having thus described my invention, what 25 Fig. 4: is an adaptation of the device in I claim as new and desire to secure by Letwhich the propeller blade is divided into two ters Patent, is as follows: parts; one of which is positively afiixed to A compound propeller mechanism for airthe transverse shaft, and the other rotatable ships, which mechanism comprises an annuon the said shaft. lar gear affixed to the said ship concentrical- 30 Referring now chiefly to Figures 1, 2 and ly to the drive shaft thereof, a cross shaft 3 of the drawing; the apparatus, in its simaffixed to the said drive shaft, blade eleplest form consists of an annular gear 8 ments rotatably mounted on the said cross which, as shown, has an internal bevel; it shaft and pinions on the said blade elements may however, be of other shape if desired. in mesh: with the said annular gear, and fixed 35 This bevel gear is affixed to the engine 9, or blade elements mounted on the said cross to the fuselage frame by means of the cap shaft adjacent to the blade elements before screws 10. The main shaft 11 has a T branch mentioned.

12 aflixed at its forward extremity and se- Signed at New York, in the county of New cured by the cap screw 13. York and State of New York, this 14th day 40 A transverse shaft 1 1 is positioned within of May, A. D. 1930.

the T branch and positively set by the cap GENE J. PARK. screw 15. Bevel pinions 16 are rotatably mounted on the transverse shaft and these have extension shanks 17 to which the pro- 45 peller collars 18 are aflixed by the screws 19.

Stop collars 20 are affixed to the ends of the transverse shaft and retain the pinions in position. The propeller blades are seen at 21.

50 In action; the main shaft 11 swings the V 7 

